3766 	struct bpf_func_state *caller, *callee;  in check_func_call()  local
3783 	caller = state->frame[state->curframe];  in check_func_call()
3806 	err = transfer_reference_state(callee, caller);  in check_func_call()
3814 		callee->regs[i] = caller->regs[i];  in check_func_call()
3818 		mark_reg_not_init(env, caller->regs, caller_saved[i]);  in check_func_call()
3830 		print_verifier_state(env, caller);  in check_func_call()
3840 	struct bpf_func_state *caller, *callee;  in prepare_func_exit()  local
3858 	caller = state->frame[state->curframe];  in prepare_func_exit()
3860 	caller->regs[BPF_REG_0] = *r0;  in prepare_func_exit()
3863 	err = transfer_reference_state(caller, callee);  in prepare_func_exit()
3872 		print_verifier_state(env, caller);  in prepare_func_exit()